Release roam 0.1.0

[mitchelloharawild]

First release:

• [x] usethis::use_cran_comments()
• [x] Update (aspirational) install instructions in README
• [x] Proofread Title: and Description:
• [x] Check that all exported functions have @return and @examples
• [x] Check that Authors@R: includes a copyright holder (role 'cph')
• [x] Check licensing of included files
• [x] Review https://github.com/DavisVaughan/extrachecks

Prepare for release:

• [x] git pull
• [x] Check if any deprecation processes should be advanced, as described in Gradual deprecation
• [x] devtools::build_readme()
• [x] urlchecker::url_check()
• [x] devtools::check(remote = TRUE, manual = TRUE)
• [x] devtools::check_win_devel()
• [ ] rhub::check_for_cran()
• [ ] git push
• [ ] Draft blog post

Submit to CRAN:

• [ ] usethis::use_version('minor')
• [ ] devtools::submit_cran()
• [ ] Approve email

Wait for CRAN...

• [ ] Accepted :tada:
• [ ] git push
• [ ] usethis::use_github_release()
• [ ] usethis::use_dev_version()
• [ ] usethis::use_news_md()
• [ ] git push
• [ ] Finish blog post
• [ ] Tweet
• [ ] Add link to blog post in pkgdown news menu

[mitchelloharawild]

TODO:

• [ ] Improve the README with additional details, rather than the default of 'the goal of roam is to...'
• [ ] Add more documentation for creating a roam dataset, possibly in a vignette or at least adding more information in the README (e.g. about versioning)
• [ ] Add more details in NEWS relating to what this initial release allows you to do
• [ ] The skip for tests should exist in the tests, not code: https://github.com/FinYang/roam/blob/59818b65c38189fdf631e2e01de48ff750927c14/R/roam.R#L73
• [ ] Bump package version for release
• [ ] A few design improvements. For example, roam_version() shouldn't have two purposes / functionalities. Instead create a different function for setting the version, like roam_set_version() to be used in obtainer functions.
• [ ] Probably some improvements to versioning, like attaching it to the same cached roam object? I'm not sure how this currently works since there weren't examples I could find easily.

There's some code design improvements possible too, a lot of the flags aren't needed but they can be improved in future versions. I think it's most important to have a good design for the first release, where future improvements can be made with minimal breaking changes for users.